118 lines
3.4 KiB
TypeScript
118 lines
3.4 KiB
TypeScript
/*
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This file is part of TALER
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(C) 2016 GNUnet e.V.
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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"use strict";
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import {IExchangeInfo} from "./types";
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/**
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* Declarations and helpers for
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* things that are stored in the wallet's
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* database.
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* @module Db
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* @author Florian Dold
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*/
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const DB_NAME = "taler";
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const DB_VERSION = 11;
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import {Stores} from "./wallet";
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import {Store, Index} from "./query";
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/**
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* Return a promise that resolves
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* to the taler wallet db.
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*/
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export function openTalerDb(): Promise<IDBDatabase> {
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return new Promise((resolve, reject) => {
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const req = indexedDB.open(DB_NAME, DB_VERSION);
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req.onerror = (e) => {
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reject(e);
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};
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req.onsuccess = (e) => {
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resolve(req.result);
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};
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req.onupgradeneeded = (e) => {
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const db = req.result;
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console.log("DB: upgrade needed: oldVersion = " + e.oldVersion);
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switch (e.oldVersion) {
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case 0: // DB does not exist yet
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for (let n in Stores) {
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if ((Stores as any)[n] instanceof Store) {
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let si: Store<any> = (Stores as any)[n];
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const s = db.createObjectStore(si.name, si.storeParams);
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for (let indexName in (si as any)) {
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if ((si as any)[indexName] instanceof Index) {
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let ii: Index<any,any> = (si as any)[indexName];
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s.createIndex(ii.indexName, ii.keyPath);
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}
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}
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}
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}
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break;
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default:
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if (e.oldVersion != DB_VERSION) {
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window.alert("Incompatible wallet dababase version, please reset" +
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" db.");
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chrome.browserAction.setBadgeText({text: "err"});
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chrome.browserAction.setBadgeBackgroundColor({color: "#F00"});
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throw Error("incompatible DB");
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}
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break;
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}
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};
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});
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}
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export function exportDb(db: IDBDatabase): Promise<any> {
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let dump = {
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name: db.name,
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version: db.version,
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stores: {} as {[s: string]: any},
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};
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return new Promise((resolve, reject) => {
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let tx = db.transaction(Array.from(db.objectStoreNames));
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tx.addEventListener("complete", () => {
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resolve(dump);
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});
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for (let i = 0; i < db.objectStoreNames.length; i++) {
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let name = db.objectStoreNames[i];
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let storeDump = {} as {[s: string]: any};
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dump.stores[name] = storeDump;
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let store = tx.objectStore(name)
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.openCursor()
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.addEventListener("success", (e: Event) => {
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let cursor = (e.target as any).result;
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if (cursor) {
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storeDump[cursor.key] = cursor.value;
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cursor.continue();
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}
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});
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}
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});
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}
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export function deleteDb() {
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indexedDB.deleteDatabase(DB_NAME);
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}
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